Improvement in railroad-car axles



C. P, HEWETT.:

Car Axe.

Patented May 16, 18.65.

C. P. HEWETT.;

Car Axle.

Patented May 16, 1865.

UNITED STATES PATENT OFFICE.

c. r. HEWETT, oF KINGSTON, WIsooNs IN.

Specification forming part of Letters Patent No. 47,723, dated May 16,1865.

To all whom it may concern:

Be itknown that I, G. P. HEWETT, of Kingston, in the county of Greer.Lake and State ot Visconsin, have invented anew and Improved Axle forRailroad-Gars and Ldo hereby declare that the following is a full,clear, and exact description thereof,which will enable others skilled inthe art to make and use the saine, reference being had to theaccompanying drawings, forming part of this specitcation, in which-Figure l represents a longitudinal section ot' my invention, taken inthe line m, Fig. 2; Fig. 2, atrausverse section ot1 the same, taken inthe line y y, Fig. 1.

Similar letters of reference indicate like parts. Y

The object of this invention is to obviate friction in the running ofcars over curves and over imperfect tracks.

The invention consists in constructing the axle ot' two separate ordistinct parts, connected by a sleeve in such a manner that one pirt ofthe axle with its wheel nia-y rotate Independently of the other.

A A represent the two'parts of the axle, each having a wheel attached.The parts A A are turned down at their inner ends to form a journal, a,and a shoulder, b, each journal having a groove, c, madecircumferentially in it near its end.

B represents a sleeve into which the journals a a of the two parts A Aof the axle are tted, the shoulders b abutting against the ends of B.The journals a are secured in the sleeve by means of pins d, which passtransversely through the sleeve and tit in the grooves c, the pins beingretained therein by setscrews e, as shown in both figures. A hole ismade in the sleeve with a screw or plug, f, lttedin it. rPhe journals aare lubricated by pouring oil through this hole. A small space may beallowed between the ends of the journals a a to serve as a reservoir foroil. 'llhe grooves c c will also answer for that purpose; or, ifnecessary, grooves may be made in the inner side ot' the sleeve toretain oil. By this arrangement it will be seen that each part A, withits wh eel attached, will be allowed to turn independently of the other,and hence no additional friction will be produced when the car ispassing over curves, as there will be no slip or drag of either wheel,the wheel passing over the greatest surface in a given time beingallowed to rota-te proportionably faster than the other. Thisindependent turning of the wheels is also important where a track isimperfectly laid. as the jars or concussions to which one wheel may besubjected are not transmitted to the other. The axle therefore will notbe liable to be injured or strained, as is now frequently the case, andthe journals ot' the axle will be preserved from much wear and tear.

I claim as new and desire to secure by Letters Patent- The combinationof the axles AA, with their circumferential grooves c c, the sleeve B,the pins d d, with their set-screws e e, and the lubricating-oriticefsubstantially as described and represented.

. C. P. HEWETT. Witnesses:

FRANKLIN Goss, A. P. HEWETT.

